Hi. We own a 2 units of the RUT 955. Relating to the switch from sim 1 to sim 2 and from sim 2 to sim 1 we are able to set the switch point. But from land line to the sim we are not able to set it. Which means when land line goes to total cut off thats when it switches to sim. Is there a setting where I can set the switch point from land to sim. This is because we need to switch when there is a lag and not wait for a total cut off on the land line. Which hardly happens here in Singapore, Kindly advise.